Math is the study of futility.
Futility to calculate, to understand, to define, to rationalize.
1 is the only number. Everything else is a name.
So in a sense math is exploration of the relation between existence and nonexistence.
I've shown you zero fish. The number of fish I've shown you is zero. If I tracked you down, brought a fish with me and showed it to you, I'd have shown you 1 fish, but I haven't.